Appendix A: Using switch matrices
Model 4200A-SCS Parameter Analyzer Reference Manual
A-2
4200A-901-01 Rev. C / February 2017
Figure 520: Typical systems using a switch matrix
Matrix card types
The recommended Keithley Instruments matrix cards are:
•
Model 7071 8 x 12 General Purpose Matrix Card, <100 pA offset current
•
Model 7072 8 x 12 Semiconductor Matrix Card, <1 pA offset current
•
Model 7136 (not available to purchase)
•
Model 7174A 8 x 12 Low Current Matrix Card, <100 fA offset current
•
Model 9174 8 x 12 Semiconductor Matrix Card , <100 fA offset current (not available to purchase)
Note that a key characteristic of these cards is low offset current to minimize the negative effects of
offset currents on low-current measurements.
